Rajgopal, J. K. “ASSESSMENT OF QUALITY OF LIFE IN PATIENTS OF TYPE 2 DIABETES MELLITUS USING THE DIABETES 39 QUESTIONNAIRE”. Innovare Journal Health Sciences, vol. 4, no. 5, Oct. 2016, pp. 3-5, https://mail.innovareacademics.in/journals/index.php/ijhs/article/view/15063.